Arduino ボードESP32 Dev Moduleに対するコンパイル時にエラーが発生しました

##困っていること
Arduino IDE (Windows10 PC）にて，ESP32に書き込むプログラムのコンパイルをしています．
プログラムと，ヘッダーファイルを末尾に添付します．

このプログラムをコンパイルすると，次のエラーが出てきてしまいます．
原因が分からずこまっています．

text
1sketch\Test3.ino.cpp.o:(.literal._Z5setupv+0x14): undefined reference to `ESP32_BME280_I2C::ESP32_BME280_I2C_Init(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)'
2
3sketch\Test3.ino.cpp.o:(.literal.startup._GLOBAL__sub_I_bme280i2c+0x8): undefined reference to `ESP32_BME280_I2C::ESP32_BME280_I2C(unsigned char, unsigned char, unsigned char, unsigned int)'
4
5sketch\Test3.ino.cpp.o:(.literal._Z7bme_getv+0x1c): undefined reference to `ESP32_BME280_I2C::Read_All(double*, double*, double*)'
6
7sketch\Test3.ino.cpp.o: In function `setup()':
8
9C:\Users\PLC\Documents\Arduino\Program\Test3\Test3/Test3.ino:48: undefined reference to `ESP32_BME280_I2C::ESP32_BME280_I2C_Init(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)'
10
11sketch\Test3.ino.cpp.o: In function `_GLOBAL__sub_I_bme280i2c':
12
13C:\Users\PLC\Documents\Arduino\Program\Test3\Test3/Test3.ino:48: undefined reference to `ESP32_BME280_I2C::ESP32_BME280_I2C(unsigned char, unsigned char, unsigned char, unsigned int)'
14
15sketch\Test3.ino.cpp.o: In function `bme_get()':
16
17C:\Users\PLC\Documents\Arduino\Program\Test3\Test3/Test3.ino:35: undefined reference to `ESP32_BME280_I2C::Read_All(double*, double*, double*)'
18
19collect2.exe: error: ld returned 1 exit status
20
21exit status 1
22
23ボードESP32 Dev Moduleに対するコンパイル時にエラーが発生しました。
24

##プログラム

c++
1#include "ESP32_BME280_I2C.h"
2
3const uint8_t Address = 0x76;
4const uint8_t sda = 12;
5const uint8_t scl = 14;
6const uint32_t frequency = 30000;
7
8ESP32_BME280_I2C bme280i2c(Address, scl, sda, frequency);
9
10void setup(){
11  Serial.begin(115200);
12  delay(1000); //Take some time to open up the Serial Monitor
13
14  //Example Indoor navigation
15  uint8_t t_sb = 0; //stanby 0.5ms
16  uint8_t filter = 4; //IIR filter = 16
17  uint8_t osrs_t = 2; //OverSampling Temperature x2
18  uint8_t osrs_p = 5; //OverSampling Pressure x16
19  uint8_t osrs_h = 1; //OverSampling Humidity x1
20  uint8_t Mode = 3; //Normal mode
21
22  bme280i2c.ESP32_BME280_I2C_Init(t_sb, filter, osrs_t, osrs_p, osrs_h, Mode);
23  delay(1000);
24}
25
26void loop(){
27  bme_get();
28  delay(5000);
29}
30
31//************** BME280 measure *************************
32void bme_get(){ 
33  double temperature, pressure, humidity;
34
35  bme280i2c.Read_All(&temperature, &pressure, &humidity);
36
37  char temp_c[10], hum_c[10], pres_c[10];
38  sprintf(temp_c, "%2.2lf", temperature);
39  sprintf(hum_c, "%2.2lf", humidity);
40  sprintf(pres_c, "%4.2lf", pressure);
41
42  Serial.println("-----------------------");
43  Serial.print("Temperature = "); Serial.println(temp_c);
44  Serial.print("Humidity = "); Serial.println(hum_c);
45  Serial.print("Pressure = "); Serial.println(pres_c);
46  Serial.println("-----------------------");
47  Serial.flush();
48}

##Header

c++
1/*
2  ESP32_BME280_I2C.h - for Arduino core for ESP32
3  Beta version 1.2
4  
5License MIT [Modified person is Mgo-tec.]
6Reference SWITCH SCIENCE page URL:
7http://trac.switch-science.com/wiki/BME280
8Reference library:
9https://github.com/adafruit/Adafruit_BME280_Library
10Original License is BSD [Copyright (c) 2012, Adafruit Industries]
11BSD License:
12Redistribution and use in source and binary forms, with or without
13modification, are permitted provided that the following conditions are met:
141. Redistributions of source code must retain the above copyright
15notice, this list of conditions and the following disclaimer.
162. Redistributions in binary form must reproduce the above copyright
17notice, this list of conditions and the following disclaimer in the
18documentation and/or other materials provided with the distribution.
193. Neither the name of the copyright holders nor the
20names of its contributors may be used to endorse or promote products
21derived from this software without specific prior written permission.
22THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
23EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
26DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32*/
33
34#ifndef ESP32_BME280_I2C_h_
35#define ESP32_BME280_I2C_h_
36
37#include "Arduino.h"
38#include "Wire.h"
39
40class ESP32_BME280_I2C
41{
42public:
43  ESP32_BME280_I2C(uint8_t bme280_address, uint8_t scl, uint8_t sda, uint32_t freq);
44
45  void ESP32_BME280_I2C_Init(uint8_t Stanby_t, uint8_t filter, uint8_t overS_T, uint8_t overS_P, uint8_t overS_H, uint8_t mode);
46  void WriteRegister(uint8_t reg_address, uint8_t data);
47  void ReadCalibration(void);
48  double Read_Temperature();
49  double Read_Pressure();
50  double Read_Humidity();
51
52  void Read_All(double *temp, double *press, double *hum);
53  double ReadAltitude(double SeaLevel_Pres, double pressure);
54
55  int32_t compensate_T(int32_t adc_T);
56  double compensate_T_double(int32_t adc_T);
57
58  uint32_t compensate_P(int32_t adc_P);
59  double compensate_P_double(int32_t adc_P);
60
61  uint32_t compensate_H(int32_t adc_H);
62  double compensate_H_double(int32_t adc_H);
63
64  uint16_t read16bit(uint8_t reg);
65  uint8_t read8bit(uint8_t reg);
66
67private:
68  uint8_t _bme280_addres;
69  uint8_t _scl, _sda;
70  uint32_t _freq;
71
72  int32_t _t_fine;
73
74  uint16_t _dig_T1;
75   int16_t _dig_T2;
76   int16_t _dig_T3;
77
78  uint16_t _dig_P1;
79   int16_t _dig_P2;
80   int16_t _dig_P3;
81   int16_t _dig_P4;
82   int16_t _dig_P5;
83   int16_t _dig_P6;
84   int16_t _dig_P7;
85   int16_t _dig_P8;
86   int16_t _dig_P9;
87
88  uint8_t  _dig_H1;
89   int16_t _dig_H2;
90  uint8_t  _dig_H3;
91   int16_t _dig_H4;
92   int16_t _dig_H5;
93   int8_t  _dig_H6;
94};
95
96#endif

行動規範の内容に同意します

回答3件

Arduino IDEのライブラリのインストールには、やり方にいくつかバリエーションはありますけれど、この場合

githubのプロジェクトページの緑の[↓Code] のダウンロードボタンを押し、[Download ZIP]を選択してダウンロードする
Arduino IDEのメニュー[スケッチ]-[ライブラリをインクルード]-[.ZIP形式のライブラリをインストール...]でダイアログが出るのでダウンロードしたZIPファイルを選択、[開く]を押すとライブラリがインストールされる
スケッチからは#include <ESP32_BME280_I2C.h> ("ファイル名"ではなく<ファイル名>)としてライブラリの使用を指示する

とするのが適正かと思います。
ライブラリとして配布されているものはこのように一括してIDEに扱いを任せましょう。とくに事情がない限り、バラバラにして.hと.cppをスケッチと一緒に置いて...などといじくり回さないほうがよいと思います。

投稿2021/04/06 04:22

編集2021/04/06 04:24